diff --git a/desktop/src/scripts/list.js b/desktop/src/scripts/list.js
index fd6dd40..6691863 100644
--- a/desktop/src/scripts/list.js
+++ b/desktop/src/scripts/list.js
@@ -29,20 +29,32 @@ async function populateSourceFilter() {
     `;
 
     try {
-        const response = await fetch(`${API_BASE}/extensions`);
-        if (response.ok) {
-            const data = await response.json();
-            const extensions = data.extensions || [];
+        const [animeRes, bookRes] = await Promise.all([
+            fetch(`${API_BASE}/extensions/anime`),
+            fetch(`${API_BASE}/extensions/book`)
+        ]);
 
-            extensions.forEach(extName => {
-                if (extName.toLowerCase() !== 'anilist' && extName.toLowerCase() !== 'local') {
-                    const option = document.createElement('option');
-                    option.value = extName;
-                    option.textContent = extName.charAt(0).toUpperCase() + extName.slice(1);
-                    select.appendChild(option);
-                }
-            });
+        const extensions = new Set();
+
+        if (animeRes.ok) {
+            const data = await animeRes.json();
+            (data.extensions || []).forEach(ext => extensions.add(ext));
         }
+
+        if (bookRes.ok) {
+            const data = await bookRes.json();
+            (data.extensions || []).forEach(ext => extensions.add(ext));
+        }
+
+        extensions.forEach(extName => {
+            const lower = extName.toLowerCase();
+            if (lower !== 'anilist' && lower !== 'local') {
+                const option = document.createElement('option');
+                option.value = extName;
+                option.textContent = extName.charAt(0).toUpperCase() + extName.slice(1);
+                select.appendChild(option);
+            }
+        });
     } catch (error) {
         console.error('Error loading extensions:', error);
     }
diff --git a/docker/src/scripts/list.js b/docker/src/scripts/list.js
index fd6dd40..6691863 100644
--- a/docker/src/scripts/list.js
+++ b/docker/src/scripts/list.js
@@ -29,20 +29,32 @@ async function populateSourceFilter() {
     `;
 
     try {
-        const response = await fetch(`${API_BASE}/extensions`);
-        if (response.ok) {
-            const data = await response.json();
-            const extensions = data.extensions || [];
+        const [animeRes, bookRes] = await Promise.all([
+            fetch(`${API_BASE}/extensions/anime`),
+            fetch(`${API_BASE}/extensions/book`)
+        ]);
 
-            extensions.forEach(extName => {
-                if (extName.toLowerCase() !== 'anilist' && extName.toLowerCase() !== 'local') {
-                    const option = document.createElement('option');
-                    option.value = extName;
-                    option.textContent = extName.charAt(0).toUpperCase() + extName.slice(1);
-                    select.appendChild(option);
-                }
-            });
+        const extensions = new Set();
+
+        if (animeRes.ok) {
+            const data = await animeRes.json();
+            (data.extensions || []).forEach(ext => extensions.add(ext));
         }
+
+        if (bookRes.ok) {
+            const data = await bookRes.json();
+            (data.extensions || []).forEach(ext => extensions.add(ext));
+        }
+
+        extensions.forEach(extName => {
+            const lower = extName.toLowerCase();
+            if (lower !== 'anilist' && lower !== 'local') {
+                const option = document.createElement('option');
+                option.value = extName;
+                option.textContent = extName.charAt(0).toUpperCase() + extName.slice(1);
+                select.appendChild(option);
+            }
+        });
     } catch (error) {
         console.error('Error loading extensions:', error);
     }